Protective structure, socket, plug and method assuring a live wire and a neutral wire to be powered off simultaneously when overheating

Abstract

The present invention discloses a protective structure, plug, socket and method assuring a live wire and a neutral wire to be powered off simultaneously when overheating. The present invention limits a live wire spring plate from contacting with a live wire conductive plate, and a neutral wire spring plate from contacting with a neutral wire conductive plate, such that when the live wire spring plate and the live wire conductive plate are overheated or the neutral wire spring plate and the neutral wire conductive plate are overheated, the live wire spring plate, the live wire conductive plate, the neutral wire spring plate and the neutral wire conductive plate can be separated apart at a same time.

What is claimed is: 
     
       1. A protective structure assuring a live wire and a neutral wire to be powered off simultaneously when overheating, being used to limit a live wire spring plate and a live wire conductive plate from contacting with each other, as well as a neutral wire spring plate and a neutral wire conductive plate from contacting with each other, with the protective structure assuring a live wire and a neutral wire to be powered off simultaneously when overheating comprising:
 a first limiting element, a second limiting element and a connecting element, wherein the connecting element is connected with the first limiting element and the second limiting element, the first limiting element and the second limiting element abut respectively at the live wire spring plate and the neutral wire spring plate, and the connecting element limits the live wire spring plate and the neutral wire spring plate, allowing the live wire spring plate and the live wire conductive plate to contact with each other, as well as the neutral wire spring plate and the neutral wire conductive plate to contact with each other; when a location between the live wire spring plate and the live wire conductive plate is overheated or a location between the neutral wire spring plate and the neutral wire conductive plate is overheated, if any one location in the first limiting element, the second limiting element or the connecting element is destructed, then the first limiting element, the second limiting element and the connecting element all lose the original limiting function thereof, allowing the live wire spring plate, the live wire conductive plate, the neutral wire spring plate and the neutral wire conductive plate to be separated apart at a same time. 
 
     
     
       2. The protective structure assuring a live wire and a neutral wire to be powered off simultaneously when overheating, according to  claim 1 , wherein the first limiting element, the second limiting element and the connecting element are all made of plastic, the first limiting element and the second limiting element are in a plate shape, a destructive portion is disposed between the connecting element and the first limiting element as well as between the connecting element and the second limiting element, and thickness of the destructive portion is smaller than thickness of the connecting element. 
     
     
       3. The protective structure assuring a live wire and a neutral wire to be powered off simultaneously when overheating, according to  claim 1 , wherein the first limiting element and the second limiting element are made of metal, the connecting element is made of plastic, and a destructive portion is disposed between the connecting element and the first limiting element as well as between the connecting element and the second limiting element. 
     
     
       4. The protective structure assuring a live wire and a neutral wire to be powered off simultaneously when overheating, according to  claim 1 , wherein the first limiting element and the second limiting element are in a shape of bumps which are formed respectively at two opposite ends of the connecting element. 
     
     
       5. The protective structure assuring a live wire and a neutral wire to be powered off simultaneously when overheating, according to  claim 1 , wherein the live wire conductive plate is formed with a first notch, the live wire spring plate is formed with a second notch, the neutral wire conductive plate is formed with a third notch, and the neutral wire spring plate is formed with a fourth notch; whereas, the first notch, the second notch, the third notch and the fourth notch are used to accommodate the connecting element, with that a width of the first notch is larger than a width of the second notch, and a width of the third notch is larger than a width of the fourth notch. 
     
     
       6. The protective structure assuring a live wire and a neutral wire to be powered off simultaneously when overheating, according to  claim 1 , wherein the first limiting element is formed with a first collar to sheath the live wire spring plate, and the second limiting element is formed with a second collar to sheath the neutral wire spring plate. 
     
     
       7. The protective structure assuring a live wire and a neutral wire to be powered off simultaneously when overheating, according to  claim 6 , wherein part of a wall of the first collar is thinner to form a first destructive portion, and part of a wall of the second collar is thinner to form a second destructive portion. 
     
     
       8. The protective structure assuring a live wire and a neutral wire to be powered off simultaneously when overheating, according to  claim 6 , wherein the live wire spring plate is formed with a first bending portion on which is provided with a first groove, so as to form a first sheathing section on the first bending portion, allowing the first collar to be sheathed on the first sheathing section; and the neutral wire spring plate is formed with a second bending portion on which is provided with a second groove, so as to form a second sheathing section on the second bending portion, allowing the second collar to be sheathed on the second sheathing section. 
     
     
       9. The protective structure assuring a live wire and a neutral wire to be powered off simultaneously when overheating, according to  claim 1 , wherein the live wire conductive plate includes plural live wire slots, the live wire conductive plate contacts with one single live wire spring plate, the neutral wire conductive plate includes plural neutral wire slots, the neutral wire conductive plate contacts with one single neutral wire spring plate, and the live wire conductive plate, the live wire spring plate, the neutral wire conductive plate and the neutral wire spring plate are commonly limited by the first limiting element, the second limiting element and the connecting element, under a normal condition. 
     
     
       10. A socket using the protective structure assuring a live wire and a neutral wire to be powered off simultaneously when overheating, according to  claim 1 , comprising:
 an insulative unit, which is provided with a live wire receptacle and an opposite neutral wire receptacle; 
 a live wire conductive plate, which is installed in the insulative unit and corresponds to the live wire receptacle; 
 a neutral wire conductive plate, which is installed in the insulation unit and corresponds to the neutral wire receptacle; 
 a live wire spring plate, which is installed in the insulative unit and corresponds to the live wire conductive plate; and 
 a neutral wire spring plate, which is installed in the insulative unit and corresponds to the neutral wire conductive plate; 
 wherein by abutting the first limiting element and the second limiting element of the protective structure, which assures a live wire and a neutral wire to be powered off simultaneously when overheating, at the live wire spring plate and the neutral wire spring plate respectively, and by using the connecting element to limit the live wire spring plate and the neutral wire spring plate, the live wire spring plate and the live wire conductive plate contact with each other, as well as the neutral wire spring plate and the neutral wire conductive plate contact with each other; and when a location between the live wire spring plate and the live wire conductive plate is overheated or a location between the neutral wire spring plate and the neutral wire conductive plate is overheated, if any one location in the first limiting element, the second limiting element or the connecting element is destructed, then the first limiting element, the second limiting element and the connecting element all lose the original limiting function thereof, allowing the live wire spring plate, the live wire conductive plate, the neutral wire spring plate and the neutral wire conductive plate to be separated apart at a same time. 
 
     
     
       11. A plug using the protective structure assuring a live wire and a neutral wire to be powered off simultaneously when overheating, according to  claim 1 , comprising:
 an insulative unit; 
 a live wire conductive plate, which is disposed in the insulative unit and is extended out of the insulative unit; 
 a neutral wire conductive plate, which is disposed in the insulative unit and is extended out of the insulative unit; 
 a live wire spring plate, which is disposed in the insulative unit and corresponds to the live wire conductive plate; and 
 a neutral wire spring plate, which is disposed in the insulative unit and corresponds to the neutral wire conductive plate; 
 wherein by abutting the first limiting element and the second limiting element of the protective structure, which assures a live wire and a neutral wire to be powered off simultaneously when overheating, at the live wire spring plate and the neutral wire spring plate respectively, and by using the connecting element to limit the live wire spring plate and the neutral wire spring plate, the live wire spring plate and the live wire conductive plate contact with each other, as well as the neutral wire spring plate and the neutral wire conductive plate contact with each other; and when a location between the live wire spring plate and the live wire conductive plate is overheated or a location between the neutral wire spring plate and the neutral wire conductive plate is overheated, if any one location in the first limiting element, the second limiting element or the connecting element is destructed, then the first limiting element, the second limiting element and the connecting element all lose the original limiting function thereof, allowing the live wire spring plate, the live wire conductive plate, the neutral wire spring plate and the neutral wire conductive plate to be separated apart at a same time. 
 
     
     
       12. A method assuring a live wire and a neutral wire to be powered off simultaneously when overheating, comprising:
 abutting a first limiting element and a second limiting element at a live wire spring plate and a neutral wire spring plate respectively, and using a connecting element to connect the first limiting element and the second limiting element, allowing the connecting element to limit the live wire spring plate and the neutral wire spring plate, such that the live wire spring plate and the live wire conductive plate contact with each other, as well as the neutral wire spring plate and the neutral wire conductive plate contact with each other, under a normal condition; and 
 selecting a thermal destructive material for the first limiting element, the second limiting element or the connecting element, with the thermal destructive material being allowed to be destructed at a temperature of 80° C.-299° C., such that when a location between the live wire spring plate and the live wire conductive plate is overheated or a location between the neutral wire spring plate and the neutral wire conductive plate is overheated, if any one location in the first limiting element, the second limiting element or the connecting element is destructed, then the first limiting element, the second limiting element and the connecting element all lose the original limiting function thereof, allowing the live wire spring plate, the live wire conductive plate, the neutral wire spring plate and the neutral wire conductive plate to be separated apart at a same time.